509 Monoblock Power Amplifiers By EAR

We are excited to offer EAR electronics, widely regarded for producing some of the most musical and engaging tube amplifiers in the industry. With countless high-end amplifier brands available, many priced much higher than EAR, we at Jaguar focus on offering only the finest — like EAR and Lamm — crafted by visionary engineers whose designs deliver a truly unique, exceptional listening experience.

With a wide range of models, you’re sure to find the perfect EAR amplifier to suit your system and bring your ideal sound to life.

The EAR 509 monoblock amplifiers deliver 100 watts per channel into 4, 8, or 16 ohms, offering incredible power and performance. Whether you’re using RCA or true balanced inputs, the 509 amplifiers provide flexibility for various setups. With no feedback used on the transformer secondary and complete stability across all loads, these monoblocks are built to handle demanding speakers and provide powerful, distortion-free output. When you need serious tube power, the EAR 509 is the ultimate choice.

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EAR (formerly Esoteric Audio Research) represents the groundbreaking work of legendary designer Tim de Paravicini, whose name has been synonymous with high-fidelity electronics since the 1970s. De Paravicini’s pioneering designs are not only found in EAR products but have also shaped the offerings of some of the most respected audio manufacturers worldwide. Many of his innovations have been cherished by discerning listeners for decades, earning a lasting place in the world of high-end audio.

Beyond consumer audio, de Paravicini has made significant contributions to professional recording and mastering. His tape machines, microphones, and other recording equipment have been trusted by iconic artists like Pink Floyd and Lenny Kravitz, as well as leading labels such as Altarus and Water Lily Acoustics. Renowned engineers like Robert Ludwig, Joe Gastwirt, and James Guthrie have relied on his designs. The Exchange, one of the world’s top mastering facilities in London, uses two full playback systems designed and built entirely by EAR. Even Mobile Fidelity Sound Labs depends on his LP cutting system and tape deck electronics.

Known for their extraordinary ability to reproduce sound with purity and precision, EAR amplifiers stand apart for their transparent, distortion-free performance. Tim de Paravicini’s research into ultrasonic resonances and the subjective effects of distortion has revolutionized amplifier design, allowing for a deeper understanding of how measurements relate to the listener’s experience. The result: EAR amplifiers are widely regarded as some of the most accurate, musical amplifiers available today.

• Power Output (20Hz-20KHz<0.25% THD into Rate Load)…100W
• Frequency Response 8Hz-30KHz…………+0-1dB
• Frequency Response 3Hz-80KHz……….+0-3dB
• Power Bandwidth -3dB,0.5% THD…….12Hz-60KHz
• I.M.D. at any level from 100mW-100W equivalent power…<0.2%
• Output Damping Factor (0.4ohm + 4uH)….20
• Signal to Noise Ratio down from 100W…….96dB
• Input Sensitivity (Unbalanced)………1.2V
• Input Impedance (Unbalanced)………25Kohm
• Power Consumption ……………….180V.A.
• Weight …………………18kg
• Size 12″(30cm)W……..10″(25.4cm)D…….6″(15cm)H